Injector



(Model.) 2' Sheets-Sheet; `1.

F. W. KREMER.

INJEGTOR.

No. 299,229. Patented May 27, 1384..

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(Model.)` a 2 sheetsH-sneet 2. I" W. KREMER.

INJECTOR.

No. 299,229... Patented May 27, 1984.

lUnire rares limiten,

Partnr INJECTOR.

SPECIFICATION forming part of Letters Patent No. 299,229, dated May 27, 18184. Application tiled September 21, 1883. (Model.)

To a/ZZ whom it may concern Be it known that I, FRANKLIN W. KREMER, a citizen of the United States, residing at VVadsworth, in the county of Medina and State of Ohio, have invented certain new and useful Improvements in Injectors, of which the following is a full, clear, and exact description.

This invention is in the nature of improvements in injectors for steam-boilers; and the object ofthe improvements is to specially adapt the injector covered by the United States Letters Patent No. 282,092, granted me July 31, 1883, for service on traction engines and locomotives.

The improvements consist in an injector convertible from a lifting-ejector to a lifting-injector, and from a lifting-injector to a nonlifting or forcing injector, in which the quantity of water fed is governable at will by means of a singlemovement lever controlling` the steam-port and also the overflow; also, in a compound steam-valve operable by said lever for effecting` such conversion in conjunction with the forcing and combining jets; also, in the exhaust mechanism, and also in the over- 'flow-controlling mechanism.

In the accompanying drawings, illustrating my invention, in the several figures of which like parts are similarly designated, Figure 1 is a view in front elevation. Fig. 2 is a vertical longitudinal section on the line x 00,'Fig. l, looking in the direction of the arrow, but with the lever turned to a point on its segment to open the steam-valve. Fig. 3 is a top plan view; Fig. 4, a cross-section on the line 7/ y, Fig. 1; and Fig. 5, a side elevation, modied to show a separately-operated or non-automatic overliow.

The several sections a b c are fitted, preferably, with ground or packed or ground and packed joints, and secured together by clampbolts d d, engaging ears e eff on the sections a and c, respectively, as in the patent .referred to.

`f/ is'the steam-inlet in the section a, and h the water-inlet, also in said section, below and preferably on the side opposite the steam-inlet. The section a has a lifting-tube, fe', communicating through port j with the steaml chamber 7c, and said tube and port are in a diaphragm, Z, extending across the section a, and dividing it transversely. Said diaphragm is also provided with a port, m, extended laterally outside as a pipe, and connected by a slip-joint coupling, n, with a pipe, o, extending laterally out and up from the section b to meet it. The lifting-tube p, provided with a base to iit in and close the counterbored end of section b, is interposed and held between sections a and b, and extends up near the lifting-tube The chamber q, formed between the diaphragm Z and the base of tube p in the section a, is the suction-chamber. The upper face of the diaphragm Z is fitted to receive a disk-like valve, r, overlying the ports j m, and having a port, s, to open one or both of said ports j m for the admission of steam to the injector, as will hereinafter appear.

t is a bonnet screwed into the head of section a, and adapted to receive the stem a of the valve i', said stem being separable from said valve, if desired. The stem is secured steam-tight in the bonnet by a collar, o, and stuffing-box c. The valve is operated by a hand-lever, w, keyed to its stem, and said lever has a spring push-piece, a, with a tooth, b', to engage a segmental toothed or notched rack, c', sprung from the bonnet t, to hold the valve positively in the desired positions. The opposite end of the lever 'w is provided with a cam, cZ, to operate a lever, e', which controls the' overflow. This lever c is pivoted by a yoke, f', and screws g g on the waterinlet, so as to move toward and from the injector, and its lower end enters a cavity, h, in the overflow t', where it operates upon the stem of the overflow check valve j. This overflow check-valve j is seated in the inner end of the overflow-tube by pressure of water inside the injector to close the overliow and the said valve, and consequently the overflow is held open by the lever e under the action of the cam d of lever w. The outlet of the overiiow surrounds the walls of cavity h. The overflow-tube may be a part of or screwed into the section c. The valve j is guided in its movement by its stem playing in a horizontal opening longitudinal of the cavity h.

Between the sections b c is arranged the combining-tubek, the base Z of which is troo ted between and separates the said sections. This base l is provided with exhaust-holes m', and said holes are closed by an annular fioat or automatic valve, n', surrounding the tube k', and having its internal diameter greater than the external diameter of said tube, so as to allow a passage between said tube and valve when the latter, as will presently appear, is seated on its lugs o. The forcing-tube pi of the tube or pipe o centers in the tube k.

The operation is as follows: When the parts lare as shown in Fig. 3, the injector is closed or inoper-ative, or the valve r closed, and the `upper end of the lever e is thrown to its extreme outer. position, while its lower end is at its corresponding inner position, to consequently throw and hold open the valve j. If the push-piece 0a.be now pressed toward the lever w, its tooth or catch b will be disengaged from the notched segment c', when, if the lever w be turned till the notch 2 be engaged, the port s will'register with port j to the liftingtube and admit steam to the lifting-j et. This steam will create a vacuum in the suctionchamber, and will pass' through the section b, which is the exhaust-chamber, through the holes m m in the base of the combining-tube, forcing the annular valve n on to its lugs o', and escaping through the center opening of such valve out at the overflow. The overflowcheck. will not be seated by this pressure, because it is positively held open by the action of the cam d on the lever e. The vacuum or suction created by this steam will induce a iiow of water, which takes the course of the steam through the tube p, and as soon as water appears at the overiiow, thus giving notice of the establishment of a flow, the lever w is moved to the next notch, 3. By so turning the lever the valve rhas been rotated till its ports opens both ports j and m, thus admitting steam through the lifting-j et tube t', and also through the forcing-jet tube p. At this point of adjustment of the lever wits cam dis no longer in control of lever e', and hence said lever is free to be moved, and the pressure of the steam and water against the overflow-check j is sufficient to move said lever and close the overflow, and thus divert the whole column into the boiler. At the same time the pressure in the section c is sufficient to pushthe check n to its seat or base Z and close the openingstherein, so as to confine the outflow to the mixing or combining tube and prevent backiiow. When it is desired to diminishthe quantity of water injected, the lever is moved into one of the teeth 4 between the notch 3 and that end of the segmental rack, and such movement serves to operate the valve r to close the port j more or less,to admit more or less steam to the lifting-tube; and when the lever is' lat the extreme end of the teeth 4, or that endof the rack, the port j will be entirely closed, and the injector will-work through its forcing-jet only. Thus it will be seen that when the lever w is at the first notch, l, Figs.

1 and 3, the valve is so disposed that the machine is inactive, and when at 2 it acts asa lifter, discharging at the overflow; and when at 3 the steam/is let into the forcing-jet also, and, combining with the water, forces it through the combining or mixing tube into the boiler, both the lifting and forcing jets being active, and when at4 the lifting-jet is shut off; but the machine continues to work by force of the lifting-jet,but with a reduction in the quantity of water injected, because the forcing-jet has the double duty of lifting and forcing. To stop the machine, the lever w is brought back to the first notch, l, thereby closing the ports j m and causing its cam to actuate the lever e', and it in turn to open the overflow. The injector is thus in all its operative parts under the control of a single lever,

Aand by said lever, as has been seen, may be converted from a lifting-ejector into a liftinginjector, and from that to a non-lifting injector, with the water always under control as to quantity injected.

When the machine is used as a non-lifter, the lever w is passed to the notch 4 immediately, and the check plate or valve o, being automatic, is opened by the steam passing down, but closed as soon as the forcer begins to inject water.

Instead of a check-valve in the overflow, a rotary plug may be used, as indicated in Fig. 5, and the operation of such plug made independent of the lever, as shown, or by gearing therewith, dependent upon it.

In case of any derangement, access is readily had to the parts by means of the removable clamping-bolts.

, What I claim is l. The combination, with the steam inlet and valve, of an operating-lever provided with a spring push-piece and a toothed or notchedsegmental rack, with which said lever enga-ges to govern the position of the valve, substantially as described.

2. The combination, with the steam-inlet,

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the lvalve therefor, an operating'- lever provided with a spring-catch and a cam, and a toothed segment engaged by said spring-catch, of the overow, a check-valve therein, and a lever for said check-valve under the control of the cam of the steam-inlet-controlling valvelever, substantially as and for the purpose `described.

3. The combination, in an injector, of a perforated or ported base or diaphragm for the combining or mixing tube, and an annular Valve or plateA automatically opening or closing such perforations or` ports, substantially as shown and described.

4. The combination,with the overflow, of an automatically-seated check-valve, a lever to unseat or open the same, and the live-steamvalve-actuating lever operating in connection with said check-valve lever, substantially'as described.

5. The combination, with the-steam inlets and ports j m and the lifting and forcing tubes In testimony whereof I have hereunto set 1o fi and p', respectively, of the steam-valve r, lny hand this 17th day of September, A. D. having the single opening s for ports j m, 1883. controlling such ports independently of one 5 another, and operable With relation thereto FRANKLIN NV. KREMER.

to admit of the grading of the Watersupply, and also the conversion of the machine from Witnesses: a lifting to' a non-lifting injector, and vice C. F. GARDNER, versa, substantially as shown and described. H. H. BRICKER. l 

